Apparatus for dynamic header compression and method thereof

Abstract

Provided are an apparatus for a dynamic header compression and a method thereof. The method for a dynamic header compression includes: receiving a received packet having a header from an upper layer; comparing header information of the received packet with header information of a previous packet; when a suppression part of the received packet is the same as a suppression part of the previous packet, compressing the received packet based on a predetermined header suppression rule; and when the suppression part of the received packet is not the same as the suppression part of the previous packet, transmitting the received packet without compression.

Description

TECHNICAL FIELD[0001]The present invention relates to an apparatus for a dynamic header compression and a method thereof; more particularly, to a dynamic header compression apparatus which compresses a header of packet in a wireless communication system and a method thereof. Particularly, the present invention relates to a packet header suppression rule which suppresses and restores a header of a packet transmitted between a terminal and a base station in an IEEE 802.16 packet-based wideband mobile communication system.[0002]This work was supported by the Information Technology (IT) research and development program of the Korean Ministry of Information and Communication (MIC) and the Korean Institute for Information Technology Advancement (IITA) [2006-S-012-01, “Development of Middleware Platform Technology based on the SDR Mobile Station”].BACKGROUND ART[0003]A payload header suppression (PHS) method is defined in IEEE 802.16 standard. In the PHS method, a header is divided into a ...

AI Technical Summary

Benefits of technology

[0056]The present invention can provide an apparatus for dynamic header compression and a method thereof which detects a new connection, compresses a header of packet based on the detected connection and performs header compression by detecting fields of occasionally varying after call setup of the header, different from applying a predetermined packet header suppression rule statically.

[0057]Also, the present invention can provide a packet header suppression rule used for dynamically compressing and restoring a header of packet transmitted between a terminal and a base station in an IEEE 802.16 packet-based wideband wireless communication system.

[0058]Moreover, the present invention can increase utility efficiency of wireless resources by applying a packet header suppression rule to a transmitted packet between a terminal and a base station in a wireless communication system dynamically based on a comparison result between a received packet and a previous packet, different from applying a predetermined packet header suppression rule statically.

[0059]In addition, the present invention can compatible with a packet header suppression rule in an IEEE 802.16 standard and increase a suppression ratio by detecting and compressing occasionally varying header information than a previous static compression method.

[0060]In addition, the present invention can be applied to a design and an implementation of the IEEE 802.16 wideband wireless communication system, and increases a efficiency of wireless resources by decreasing a size of the packet header in wireless channel.

[0061]Finally, the present invention can compress a header of packet by detecting a new connected packet when an application such as a media player and a web browser dynamically changes an access server.

Problems solved by technology

However, the PHS method of the IEEE 802.16 standard has several problems as described below.

Therefore, the fields occasionally varying after call setup cannot be eliminated based on the PHS method of the IEEE 802.16 standard.

Second, applications such as a media player and a web browser can change an access server in working.

Third, when the programmer predetermines a programming that the packet header suppression rule is set up by selecting fields of header information not varying in every packet statically, the fields not varying in every packet among the header information still can be exist and it cannot be eliminated perfectly.

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